St. Thomas Evangelical Church of India (STECI) is an evangelical, episcopal, missionary church with headquarters in Kerala, India. It was formed on January 26, 1961 as a result of a reformation movement in the Mar Thoma Church
, and traces its ancestry before then back almost 2,000 years to the tradition of Apostle Thomas.
STECI firmly affirms that the Bible is the inspired, inerrant and infallible Word of God and all that is necessary for human salvation and living in holiness and righteousness is given in the Bible. It further affirms that the church has a mandate to preach the Gospel of Jesus Christ to all the nations of the world, especially to India.